Perhaps you should try some spelling variations:
truong va » truong dai, truong cao, truong dao
toc sach » hoc sach, doc sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
va cham » va chat, va tham
truc va » thuc va, thuc vat, trung va
cua tu » cua tuc, cua cu, cua te
cua su » qua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang x ho. lieu va cham ((truc va) or (truong va)) hanh tai ((cua tu) OR (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang x ho. lieu va cham ((truc va) OR (truong va)) hanh tai ((cua tu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang x ho. lieu va cham ((truc va) or (truong va)) hanh tai ((cua tu) OR (cua su))".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang x ho. lieu va cham ((truc va) or (truong va)) hanh tai ((cua tu) OR (cua su))*.